Burning Man is not so much a music festival as a dreamy desert odyssey into a world of art, nature and debauchery. The dress code - if you decide to get dressed at all - is extravagant. Really, anything - anything - goes at this experimental festival, which counts 'radical self-expression' as one of its key principles. Swimwear, Victoriana, superhero costumes; spandex bodysuits and cyber-punk neon wigs; eagle wings and lizard tails. There's style in understatement, too. Cara Delevingne's Burning Man fashion involved dressed-down slouchy tracky bottoms and a crop top, paired with Timberland boots. Or embrace the overwhelming hippie mood with diaphanous sundresses and shaggy faux-fur jackets for night. And don't forget the basics: it's the desert, and the desert gets dusty, so sunglasses are vital. (It also gets cold at night; Native American throws as cover-ups are necessary.) The more outlandish the better, or make like the regulars, and bring goggles. Last year, Katy Perry instagramed her bug-meets-batwing pair, and Poppy Delevingne was snapped in statement silver. The only 'what to wear' rule that's non-negotiable is sunscreen - a lot of it. Go for UltraSun or P2- which only need one application for the day. Need more inspiration? Here's our pick of Burning Man costumes, and the best new buys around for this year's festival.